Improvement in locomotive and tender-coupling



r-HoM si); SIMPSON, or MOUNT VERNON, v0111c.

Letters Patent No. 102,978, dated May 10, 1870. r

IMPROVEMENT LQCOMOTIVE ANT: TENDER-COUPLING.

The Schedule'refrred to in these l-etters Patent and making part of thesame 1'0 allwhom it my concern.-

Be it known that I, THOMAS D. SIMPSON, of Mount Vernon, in the'county ofKnox and State of Ohio,

--haveinvented a new and useful Improvement in Coupling; and I dohereby-declare that the follow-, ing isa full, 'clear, and. exactdescription thereof, which will. enable others skilled in the art tomake and use'the :same, reference being bad to the accom=- panyingdrawing forming part of this specification. Thls invention relates toanewand useful improvernent in a device. for coupling a locomotive tothe tender, whereby the connection is made more perfect than it hashitherto heen,'aud whereby the traction power of the locomotive isincreased; and i It consists in the construction and arrangementhereinafterdescribed.' i

. In the accompanying"drawing+f h Figure 1 is a side "iew'of thecoupling, shown as applied tofa locomotive and tender.

- Figure2 .is a sectional view of the under side of the tender, showingthe position of thepulling-bolts.

Figure 3 is a view of theffront end of ,the tender,

showing-the block .by means of'iwhich the coupling-,

bar is adjusted.

Similarletters'of reference indicate corresponding parts.

A represents the foot-board of the engine;

B is the coupling-bar; I

. O 'isthe coupling-block -D represents long bolts, (four, more orless,) extendihgfrom one-end ofthe. tender to. the other, calledpulling-bolts. Y

The coupling-blocks C are the same on each end of the tender, andthepnlling bolts D pass through them, as seen atE in the drawing.

is a joint in the coupling-bar B. -It will be seen that the coupling-barstands at an angle, the back or F represents the coupling-pins, appliedas seen in.

tender end being considerably the lowest, and that it may be so adjustedon the block 0 as to drop more or less, as may be desired. I

By this means the weight of the tender is made to bear, more or less,upon the driving-wheels of the locomotive, and'thereby increase thetraction or adhe- V ,sive power of those wheels to the rails.

The tendency of the pull of the locomotive is to raise the forward endof the tender, audthe harder the pull the greater will be the tractivepower of the engine.

This arran filllellb revents thesli in" of the drivg D ID a:

steam occasioned thereby.

In slackening thespeed or stopping, or in backing,

thejoint G in the coupling-bar willgive, and allow the engine to pushback ona levelwith the tender.

If. the coupling-bar was a single piece, or. rigid, the tendency inbacking would be to raise the engine from the track, 'but the jointprevents it. I

By applying the two coupling-blocks O to the tender connected by thepulling-bolts, as seen in the drawing, the entire improvement may beapplied in coupling any locomotive and tender, thus increasing the powerof the engine, and saving time as well as Steam.

1 Having thus described my invention,

I claim as new and desire to secure by Letters Patentj Th'e recessedplatform A of the locomotive, and the jointed link B pivoted therein, incombination with the coupling-block '0, provided with three or more re.-

cesses, and with pulling-bolts D of the tender, all said parts beingconstructed and arranged as herein shown and described. v v

TH OS. D. SIMPSON,

Witnessesi R. WEST, JOSEPH SPRoULn.

ing-wheels on the rail, and, consequently, the loss of

